Alarm Health - Technical Report

Analysis information

The site being analyzed here is : Devonport Royal Dockyard.

The analysis period started on 2016-04-01 to 2016-04-30.

Analysis insights : Overall system health

1 - Number of alarms - How many alarms ?

Monthly Total Number of alarms

The total number of alarms of this month is :

  • 36991 alarms were detected.

This represents a decrease of -32459 number of alarms from the previous month’s total of 69450 number of alarms.

Monthly sub-categories of alarms

Out of this total number of alarms, we may further categorize alarms into :

  • 36816 alarms, are classified as “Chattering/Fleeting”. This means that these alarms are coming from a chattering meter (a meter which frequently/constantly hits the system by sending alarms). Some of these may last a certain duration, and they may also recur on a regular basis (e.g., a regular 10 minute interval pattern). Others may have no self-evident pattern (e.g., may appear in a fleeting way, turning “on” and “off” very quickly, with no discernable regularity in terms of timespan between alarm occurences).

  • 36991 alarms, are classified as “Flood periods”. This means that more than 10 alarms appeared, and several meters were sending alarms during this 10 minute period.

  • 81 alarms, are classified as “Stale alarms”. This means that these alarms lasted longer than 24h.

2 - Alarms rates = Presence alarms per time intervals

A representative value is given by the ISA18.2 “Test <1% of 10 minute periods contain more than 10 alarms”

The percentage of 10 minutes periods which have more than 10 alarms of this month is :

  • 100 % detected.

This represents no change from the previous month with a stable percentage of 100 from the previous month’s percentage of 100 10 minutes periods containing more than 10 alarms.

Here is a graph showing a daily nr of

Monthly Alarms Rates per 10 minutes interval

This provides a more detailed view

NUISANCE ALARMS removal : Why care & where to focus ?

Overall analysis :

This section will guide you in the recommended steps of nuisance alarms analysis and associated recommendations

  • Why should you start with removing the nuisance alarms ?

  • And what would be the overall alarms management improvement ?

Step 1 : Start with the STALE alarms

The key element here is the duration of the stale alarms

These stale alarms often are main contributors to the “constant baseline” of alarms.

What is important to understand is that the duration of the sale alarms is the key metric.

  • If for example some “over-THD alarm” are triggered by 15 different meters, and if the over THD issue lasted for 20 days :

– The alarms system already has 20 days of constant presence of alarm floods.

– This is considered a “constant baseline” during these 20 days.

This type of events is visually very easy to detect on a graph, as this functions like a “step” when turned “on” and then later when it is turened “off”.

Here is a graph illustrating the impact of the stale alarms on this month’s presence of alarms in each 10 minute timestamp.

This represents a reduction of 65 % of the presence of alarms in all the 10 minutes timestamps.

How would the removal or aggregation of STALE alarms improve the number of present alamrs

So if we were able to remove the stale alarms, here is what the monthly number of alarms would look like for each 10 minutes timestamp.

Step 2 : Identify the CONSTANT CHATTERING alarms

These alarms are due to the constant re-occuring conditions and can be named “constant-chattering alarms”

These “constant-chattering alarms” often also main contributors to the “constant baseline” of alarms.

In this case, what is important to understand is that the 2 key combined metrics are :

  • The PRESENCE : This is the number of 10 minutes timestamps where the alarm is present

  • The FREQUENCY : This is the number of alarms, so the number of occurences per each of these 10 minutes timestamps.

If for example 5 meters pick up a “THD voltage alarm” condition which appears for a short duration on an average of 5 times in every one of the 10 minutes intervals during that month, the system again would end up with a constant average number of alarms of 25 alarms per 10 minutes time interval.

Here is a graph illustrating the impact of the constant alarms on this month’s presence of alarms in each 10 minute timestamp.

This represents a reduction of 65 % of the presence of alarms in all the 10 minutes timestamps. CHANGE VARIABLE TO CONSTANT CHATTERING

How would the removal or aggregation of CONSTANT CHATTERING alarms improve the number of present alamrs

So if we were able to remove the stale alarms, here is what the monthly number of alarms would look like for each 10 minutes timestamp.

Step 3 : Identify the FLEETING alarms which have a LOW PRIORITY

These alarms are due to the constant re-occuring conditions and can be named “constant-chattering alarms”

These “constant-chattering alarms” often also main contributors to the “constant baseline” of alarms.

In this case, what is important to understand is that the 2 key combined metrics are :

  • The PRESENCE : This is the number of 10 minutes timestamps where the alarm is present

  • The FREQUENCY : This is the number of alarms, so the number of occurences per each of these 10 minutes timestamps.

If for example 5 meters pick up a “THD voltage alarm” condition which appears for a short duration on an average of 5 times in every one of the 10 minutes intervals during that month, the system again would end up with a constant average number of alarms of 25 alarms per 10 minutes time interval.

Here is a graph illustrating the impact of the constant alarms on this month’s presence of alarms in each 10 minute timestamp.

This represents a reduction of 65 % of the presence of alarms in all the 10 minutes timestamps.

How would the removal or aggregation of FLEETING alarms improve the number of present alamrs

So if we were able to remove the stale alarms, here is what the monthly number of alarms would look like for each 10 minutes timestamp.

If we stack all 3 together, how much would we solve ?

By adding all STALE + CONSTANT CHATTERING + FLEETING, we get the following detailed result : Below is the graph per 10 minutes timestamp.

HOW TO REDUCE THE NUMBER OF NUISANCE ALARMS

Alarms sources where most of the alarms appear

Monthly spread of sources of all alarms

An important metric to look at on a monthly basis is the number of Sources generating new/recurring alarms.

  • List of Top 10 sources generating the alarms

– With their number of alarms generated per source

– And the respective percentage of all alarms generated per source

SourceId Nr_Alarms Perc_alarms Rank_meters chattering Flood_state
388 19354 52 1 TRUE TRUE
3 12393 34 2 TRUE TRUE
34 379 1 3 TRUE TRUE
35 357 1 4 TRUE TRUE
237 311 1 5 TRUE TRUE
33 269 1 6 TRUE TRUE
220 209 1 7 TRUE TRUE
262 199 1 8 TRUE TRUE
158 196 1 9 TRUE TRUE
153 193 1 10 TRUE TRUE
  • This provides an idea of the spread of new/recurring issues :

– Maybe only very few devices generate 80% of all new/recurring alarms. In this case, it’s easy to focus the attention on these sources.

– Or, maybe all devices capable of picking up a specific type of alarm capture it. In this case, the event may be generated upstream of all these devices (e.g., a Voltage sag, coming from the utility, or a welding manufacturer next to the monitored facility ?).

This then needs to be compare with the total number of sources which generated at least one alarm during this month :

  • Below’s table shows the total number of sources of all alarms, as well as a splitt per type of generated alarms (number of chattering, flood, stale)
Metric Nr.of.SourceId Nr.of.Previous.SourceId
All 128 121
Chattering 113 103
Flood 128 121
Stale 14 19

And the next table shows the same, but by relative percentages :

Metric Perc.of.SourceId Perc.of.Previous.SourceId
All 100 100
Chattering 88 85
Flood 100 100
Stale 11 16

Monthly spread of sources of the “Stale” alarms

Another linked metric to look at is the source of lasting alarms (alarms which last longer than 10 minutes).

  • Some alarms will stay “on” for a several 10 minutes intervals (e.G., several alarms on harmonics/THD levels above acceptable threshold, measured by 5 different meters in a specific location, lasting for 8 hours in an industrial site, during a specific process step).

– This increases the constant number of alarms during such extended periods, and may increase the number of 10 minute periods with more than 10 alarms.

– In terms of recommendations, this may help focus investigation on these meters and time periods leveraging the types of alarms and the correlation of these meters and alarms as a group.

The following table will show the list of SourceIds generating more than 0.5 % of all new/recurring issues (percentage of the number of different new alarms of this month)

Top 10 or 50 List ranked by decreasing presence & duration, duration of each, priority grouping, etc.

This table will help understand what are the most frequent and present stale alarms.

What would the processing of chattering/fleeting alarms do for your alarm system this month ?

## [1] 36991

Why would the user care ?

Well, we have identified that 99 percent of all the alarms are classified as “Chattering/Fleeting”.

How would this report look like if you were able to remove these chattering alarms :

Filtering out or aggregating the alarms which regurlarly or constantly hit your system

  • Your system has 31303 identified as being “regular / constant alarms”

  • These “regular / constant alarms” represent :

– As much as 50.3 percent of the 10 minutes timestamps.

– Yet they only represent 5.3 percent of the total number of alarms.

– This means… that each one of these alarms is much more present than most of the other alarms (by a ratio of 9.4 times more present than the other alarms).

We recommend to start identifying these types of chattering alarms. The reason is simple : These alarms will be present in many 10 minutes intervals, and so will be main contributors to the baseline (the minimum number of alarms occurring per 10 minutes interval)

And to do this we recommend using a threshold of 8.3 percent of all the 10 minutes interval to determine this type of alarms.

This threshold will detect alarms which hit your system at least once every 2 hours. This 2 hours threshold is important as some alarms may be calculated over a given time interval (such as some average values). And typically, these intervals last 10 minutes or 1 hour, but in certain cases, up to 2 hours. So, by using this 2 hour threshold, this table will accurately capture these frequently occurring alarms.

So you could reduce the number of alarms by

  • Filtering these alarms (they would become 0 alarms). Before you do this, you must analyze these constantly hitting alarms to understand if these are false alarms (e.G., such as when a threshold is set to wrong threshold or wrong nominal voltage). You should not remove any alarms without doing any analysis.

  • Or by aggregating these alarms and adding a counter number counting the number of alarms and/or a number of 10 minutes intervals where these alarms are present during this month (each alarm would become 1 alarm). The advantage of creating such a table is that you keep all the information visible and available for analysis in a much more synthetic way, and you avoid unnecessarily cluttering the other alarms with these cosntanty occuring alarms.

Here is an example of such an aggregation table :

Alarm_text_number_of_10_minute_timestamps Alarm_text_percent_of_10_minute_timestamps Alarm_text_percent_of_all_alarms_timestamps total_number_of_10minutes_intervals Cause_text Effect_text SourceId Priority Alarm_text_SourceAlarm_text constant_alarms_nr_alarms stale
2607 60.3 2.0 4320 Current Potential Power Loss 3 150 Current Power Loss_3 31303 0
2711 62.7 3.4 4320 Current Potential Power Loss 3 150 Current Power Loss_3 31303 0
1320 30.5 0.9 4320 Over THD Current C Alarm Over THD Current C Alarm 95 128 Over THD Current C Alarm_Over THD Current C Alarm_95 31303 0
549 12.7 7.6 4320 Current Potential Power Loss 3 150 Current Power Loss_3 31303 0
4320 100.0 3.1 4320 Voltage Magnitude 10-minute Mean on Input V2 Voltage Magnitude Count N1 on Input V2 388 50 Voltage Magnitude 10-minute Mean on Input V2_Voltage Magnitude Count N1 on Input V2_388 31303 0
4320 100.0 3.1 4320 Voltage Magnitude 10-minute Mean on Input V3 Voltage Magnitude Count N1 on Input V3 388 50 Voltage Magnitude 10-minute Mean on Input V3_Voltage Magnitude Count N1 on Input V3_388 31303 0
4320 100.0 3.1 4320 V NegSeqMag10m Voltage Unbalance Count N1 388 50 V NegSeqMag10m_Voltage Unbalance Count N1_388 31303 0
4320 100.0 3.1 4320 Voltage Magnitude 10-minute Mean on Input V1 Voltage Magnitude Count N1 on Input V1 388 50 Voltage Magnitude 10-minute Mean on Input V1_Voltage Magnitude Count N1 on Input V1_388 31303 0
4320 100.0 3.3 4320 Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 34 128 Over THD Voltage B-C Alarm_Over THD Voltage B-C Alarm_34 31303 0
522 12.0 0.3 4320 Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 192 128 Over THD Voltage A-N Alarm_Over THD Voltage A-N Alarm_192 31303 0
510 11.8 0.3 4320 Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 192 128 Over THD Voltage B-N Alarm_Over THD Voltage B-N Alarm_192 31303 0
544 12.5 0.4 4320 Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 192 128 Over THD Voltage A-B Alarm_Over THD Voltage A-B Alarm_192 31303 0
405 9.3 0.2 4320 Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 192 128 Over THD Voltage B-C Alarm_Over THD Voltage B-C Alarm_192 31303 0
457 10.5 0.3 4320 Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 192 128 Over THD Voltage C-A Alarm_Over THD Voltage C-A Alarm_192 31303 0
368 8.5 0.2 4320 Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 192 128 Over THD Voltage C-N Alarm_Over THD Voltage C-N Alarm_192 31303 0
3793 87.8 3.4 4320 CHW Supply Temp SP{0} Status|12 388 128 CHW Supply Temp_SP{0} Status|12_388 31303 0
4320 100.0 3.1 4320 CHW Flow SP{0} Status|11 388 128 CHW Flow_SP{0} Status|11_388 31303 0
1952 45.1 1.4 4320 Voltage Phases AB Voltage Sag A-B Alarm 263 128 Voltage Phases AB_Voltage Sag A-B Alarm_263 31303 0
1952 45.1 1.4 4320 Voltage Phases BC Voltage Sag B-C Alarm 263 128 Voltage Phases BC_Voltage Sag B-C Alarm_263 31303 0
1952 45.1 1.4 4320 Voltage Phases CA Voltage Sag C-A Alarm 263 128 Voltage Phases CA_Voltage Sag C-A Alarm_263 31303 0
1952 45.1 1.4 4320 Frequency Under Frequency Alarm 263 128 Frequency_Under Frequency Alarm_263 31303 0
4077 94.3 3.0 4320 Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 128 Over THD Voltage C-A Alarm_Over THD Voltage C-A Alarm_237 31303 0
4169 96.5 3.0 4320 Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 128 Over THD Voltage C-N Alarm_Over THD Voltage C-N Alarm_237 31303 0
4216 97.5 3.1 4320 Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 128 Over THD Voltage B-C Alarm_Over THD Voltage B-C Alarm_237 31303 0
4296 99.4 3.2 4320 Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 128 Over THD Voltage A-N Alarm_Over THD Voltage A-N Alarm_237 31303 0
4313 99.8 3.1 4320 Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 128 Over THD Voltage A-B Alarm_Over THD Voltage A-B Alarm_237 31303 0

Here is how the total number of alarms would look like if you applied this recommended aggregation :

Filtering or aggregating the other chattering / fleeting and low priority alarms

This represents the second part of the chattering / fleeting alarms

Number of fleeting & low priority alarms,

List ranked by decreasing presence & duration, duration of each, priority grouping, etc.

Aggregating and analyzing the chattering HIGH priority alarms

Number of chattering & HIGH priority alarms,

List ranked by decreasing presence & duration, duration of each, priority grouping, etc.

Detailed Analysis

BASELINE & AMPLITUDE (synthesis)

In_Progress (description text)

  • Baseline

– min value of month

– per chattering, Flood, Stale

– add a column where the date for each is provided (current month)

– current & previous month

  • graph

  • Max alarms of period (daily Nr of alarms)

– Max per Total all alarms

– per chattering, Flood, Stale

– add a column where the date for each is provided (current month)

– current & previous month

  • Peak ratio

– Peak ratio calc ((Peak-min) / mean).

– current & previous month

Metric Min Max Peak_ratio Min_previous Max_previous Peak_ratio_previous
All 3077 9605 1.166767 6071 10391 0.5854022
Chattering 2211 8594 1.361261 5200 9525 0.6480883
Flood 3077 9605 1.166767 6071 10391 0.5854022
Stale 1653 5655 1.178508 3712 6624 0.6607755

Daily view of the number of alarms visualization

The following graph shows the number of alarms per day

  • Each line is a day of the month

  • Each column shows the day of the week

This helps visually see if We have any obvious day of week where more alarms appear over the month (e.G., on every Friday vs. the other days of the week, or on workings days vs. week-end days)

Hourly view of the number of alarms visualization

The following graph shows the number of alarms per hour of each day

  • Each line is a day of the month

  • Each hour is then visible as a colored rectangle

This helps visually see if We have any obvious time of day related patterns (such as typical hours where more alarms are generated, or working hours vs. shutdown hours changes).

Important remark : Graphs are in UTC and not in local hours !!!

Analysis insights - Overall “Presence of alarms” system health

NEW : Added CONSTANT PRESENCE Baseline (ADEL)

  • Baseline : “Constantly present/ON” (chattering or not) alarms

– Identify SourceIds present in >80% of “10 min timestamps”

— count (presence 1/0 of SourceId in each “10 minutes timestamp”) / (total number of “10 minutes timestamps”)

— calc Average Frq (Nr of times per 10 minute)

– Identify related alarms (cf. above …for each SourceIds which are always present/ON)

— Identify alarms (text & SourceIds) present in >80% of 10 min timestamps

—- Presence (%) & Average Frq (Nr of times per 10 minute)

— Identify alarms (text & SourceIds) not80% present their respective percentage of presence (presence / total 10 min timestamps)

—- Presence (%) & Average Frq (Nr of times per 10 minute)

Monthly Severity analysis of alarms (Nr of alarms per priority level).

In_Progress (description text)

  • This … (text)
Priority Perc_Current_month Perc_Previous_month Current_month Previous_month
Low 50 % 27 % 18524 18952
Medium 0 % 0 % 0 0
High 16 % 10 % 6034 6714

Future metrics:

  • IMPACT: Future component to be integrated in R2 (measurements based such as Load Loss“, or derived from the alarms via words which show potential impact such as”Voltage unbalance“,”phase loss“,”voltage interruption")

  • RESOLVABLE: Future component to be integrated in R2 (nuisance identification, nuisance recommendation, impacting, links analysis with potential groups/causes/origins indications to help user focus)

RECOMMENDATION Text & spec of table (JOHANNES)

Baseline : “Constantly present/ON” (chattering or not) alarms

– Identify SourceIds present in >80% of “10 min timestamps”

– Identify related alarms (cf. above …for each SourceIds which are always present/ON)

— Identify alarms (text & SourceIds) present in >80% of 10 min timestamps

— Identify alarms (text & SourceIds) not80% present their respective percentage of presence (presence / total 10 min timestamps)

Recommendations potential of resolution

Chattering low priority alarms

  • (not associated with any chronic potential impactful alarms) : Filter

Chronic chattering high priority alarms (Group and analyze) :

  • Group to reduce number of alarms and floods, and analyze priority (potential impact) as well as identify cause.

  • Provide possible origin or location, as well as all related links (co-occuring alarms) and sequences (first measurement triggering alams per meter = precise, cross meters = fuzzy but may be regular because of time drift potential)

Chronic chattering potentialy impactful alarm not high priority :

  • Review situation and either filter if low priority is confirmed (no impacted potential Load type) or change priority

Stale alarms (coming)

Analysis insights - Details on Number of Alarms

Daily Number of alarms

This shows a simplified table of all alarms for each day

This should be changed to a daily metric (average Nr of alarm per day)

Number of alarms per 10 minute period

In_Progress (description text)

Number of alarms per hourly period

In_Progress (description text)

Calculate the daily baseline on number of alarms:

  • Do we have days with 0 values ? If yes, how many (as value and as % of the month).

  • Current month & previous month

  • If not, then what is the min value?

  • Tag the day (identify the date as usable variable in text) for further alarms analysis (alarms list as constant to be analyzed).

  • Current month & previous month

ADEL # 5

PEAK analysis on number of alarms

  • When is the max day ?

  • What is the max value ?

  • Peak ratio calc ((Peak-min) / mean).

  • Current month & previous month

ADEL # 4

Typical day analysis on number of alarms

  • Statistical distribution :

– calculate the Q2 and use this to Median day identification.

– IQR analysis (means that we identify the range of 50% variance value of Nr of alarms of Q3 & Q1).

  • Current month & previous month

Top 10

Top 10 METERS generating the alarms

Summary table

  • as numbers

– Top 10 (sum(freq))

– More than 10 (%)

– chattering (%)

– Flood (%)

– Stale (future) (%)

List table (PRIO 1) => 1 table

Top 10/50 generated ALARMS

Summary table

  • Most frequent ALARM - List (Top 10)

– Top 10 (sum(freq))

– More than 10 (%)

– chattering (%)

– Flood (%)

– Stale (future) (%)

List table (PRIO 1) => 1 table

  • Top 50 Alarms (with SourceIds)

– List by decreasing rank

– as alarms text

— Cause_text, Effect_text, SourceId, Freq, Rank (group_by SourceId, Alarm_Text, ….Freq(on Nr of ID)) … NOT cause_value NOT effect_value

Cause_text Effect_text SourceId Nr_Alarms Rank_alarms chattering Flood_state
Current Potential Power Loss 3 10305 1 TRUE TRUE
Voltage Magnitude 10-minute Mean on Input V2 Voltage Magnitude Count N1 on Input V2 388 4320 2 TRUE TRUE
Voltage Magnitude 10-minute Mean on Input V3 Voltage Magnitude Count N1 on Input V3 388 4320 2 TRUE TRUE
V NegSeqMag10m Voltage Unbalance Count N1 388 4320 2 TRUE TRUE
Voltage Magnitude 10-minute Mean on Input V1 Voltage Magnitude Count N1 on Input V1 388 4320 2 TRUE TRUE
Current Potential Power Loss 3 1831 3 TRUE TRUE
CHW Supply Temp SP{0} Status|12 388 975 4 TRUE TRUE
CHW Supply Temp Supply Temp 388 974 5 TRUE TRUE
Current Potential Power Loss 3 234 6 TRUE TRUE
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 34 200 7 TRUE TRUE
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 35 188 8 TRUE TRUE
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 34 179 9 TRUE TRUE
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 35 169 10 TRUE TRUE
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 33 164 11 TRUE TRUE
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 115 12 TRUE TRUE
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 114 13 TRUE TRUE
Ethernet Clock {0}|1 388 106 14 TRUE TRUE
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 33 104 15 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 220 92 16 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 262 77 17 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 162 74 18 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 158 70 19 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 153 70 19 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 219 70 19 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 159 68 20 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 161 68 20 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 154 68 20 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 156 68 20 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 165 68 20 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 66 66 21 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 262 65 22 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 158 61 23 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 161 61 23 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 158 61 23 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 159 60 24 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 153 60 24 TRUE TRUE
Power-Up or Reset Power-Up or Reset 129 60 24 TRUE TRUE
Status Input {0} Trans. from Off to On|1 Status Input {0} Trans. from Off to On|1 129 60 24 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 156 59 25 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 154 59 25 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 153 59 25 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 162 58 26 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 219 58 26 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 162 58 26 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 165 58 26 TRUE TRUE
Power-Up or Reset Power-Up or Reset 30 58 26 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 159 58 26 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 66 57 27 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 66 57 27 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 220 57 27 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 156 57 27 TRUE TRUE
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 56 28 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 220 56 28 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 262 55 29 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 165 55 29 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 161 55 29 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 219 51 30 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 154 51 30 TRUE TRUE
Lagging Power Factor Alarm Lagging Power Factor Alarm 222 46 31 FALSE TRUE
Protection Manager - SW SW Trip Unit Door Status 270 45 32 TRUE TRUE
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 192 38 33 TRUE TRUE
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 192 37 34 TRUE TRUE
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 192 35 35 TRUE TRUE
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 192 34 36 TRUE TRUE
NULL NULL 1 30 37 TRUE TRUE
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 47 22 38 TRUE TRUE
Over THD Current C Alarm Over THD Current C Alarm 95 19 39 TRUE TRUE
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 192 19 39 TRUE TRUE
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 192 19 39 TRUE TRUE
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 18 40 TRUE TRUE
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 56 18 40 TRUE TRUE
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 47 16 41 TRUE TRUE
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 47 16 41 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 273 14 42 TRUE TRUE
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 375 12 43 TRUE TRUE
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 56 11 44 TRUE TRUE
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 56 11 44 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 271 11 44 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 274 11 44 TRUE TRUE
Power-Up or Reset Power-Up or Reset 226 10 45 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 272 10 45 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 380 9 46 TRUE TRUE
Current Potential Power Loss 3 9 46 TRUE TRUE
Frequency Under Frequency Alarm 263 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 122 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 109 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 126 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 123 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 119 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 113 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 111 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 117 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 114 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 115 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 65 8 47 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 169 8 47 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 266 8 47 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 276 8 47 TRUE TRUE
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 375 8 47 TRUE TRUE
CHW Flow SP{0} Status|11 388 7 48 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 263 7 48 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 263 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 263 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 152 7 48 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 166 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 116 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 120 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 124 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 125 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 118 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 112 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 64 7 48 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 164 7 48 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 277 7 48 TRUE TRUE
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 375 7 48 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 152 6 49 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 160 6 49 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 218 6 49 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 63 6 49 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 163 6 49 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 157 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 113 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 119 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 115 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 126 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 123 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 112 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 118 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 125 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 109 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 116 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 122 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 124 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 120 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 164 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 169 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 64 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 65 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 111 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 114 6 49 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 117 6 49 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 63 6 49 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 218 6 49 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 160 6 49 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 163 6 49 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 166 6 49 TRUE TRUE
Voltage Phases CA Voltage Sag C-A Alarm 157 6 49 TRUE TRUE
Chassis Manager - SW SW Time Loss (Cradle Comms Module) 275 6 49 TRUE TRUE
CHW Flow Flow 388 6 49 TRUE TRUE
Ethernet Front Panel 388 6 49 TRUE TRUE
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 126 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 113 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 123 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 119 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 112 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 120 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 109 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 125 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 122 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 116 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 118 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 111 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 114 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 117 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 115 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 164 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 169 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 380 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 64 5 50 TRUE TRUE
Voltage Phases BC Voltage Sag B-C Alarm 65 5 50 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 166 5 50 TRUE TRUE
Voltage Phases AB Voltage Sag A-B Alarm 160 5 50 TRUE TRUE
Circuit Breaker Manager - SW SW Time Loss (Breaker Comms Module) 275 5 50 TRUE TRUE
Circuit Breaker Manager - SW SW Time Loss (Breaker Comms Module) 277 5 50 TRUE TRUE
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 375 5 50 TRUE TRUE
Power-Up or Reset Power-Up or Reset 70 5 50 TRUE TRUE
Voltage Phases BC Voltage Swell B-C Alarm 263 5 50 TRUE TRUE

Other output

Graphs

BEFORE / AFTER chattering removal

Per recommendation, show before/after graphs

  • filter low priority chattering

  • analyze constant chattering issues (if high priority)

Per alarm (SourceId & Alarm text) top 3/10/50

  • Total Nr

  • Chattering

  • Flood

Stale alarms

Top 50 list of Stale alarms

Cause_text Effect_text SourceId ID Nr_Stale Rank_alarms Alarm_text_stale_number_of_10_minute_timestamps Alarm_text_number_of_staleIDs Rank_presence Rank_IDs Alarm_text_percent_stale_of_10_minute_timestamps Alarm_text_percent_stale_of_all_alarms_timestamps
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 395884 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 451175 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 452246 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 34 205439 4320 2 4320 1 1 6 100.0 3.1
Voltage Phases AB Voltage Sag A-B Alarm 259 335907 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BC Voltage Sag B-C Alarm 259 335908 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CA Voltage Sag C-A Alarm 259 335909 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CN Voltage Sag C-N Alarm 259 335913 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BN Voltage Sag B-N Alarm 259 335914 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AN Voltage Sag A-N Alarm 259 335915 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AB Voltage Sag A-B Alarm 259 434933 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BC Voltage Sag B-C Alarm 259 434934 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CA Voltage Sag C-A Alarm 259 434935 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CN Voltage Sag C-N Alarm 259 434936 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BN Voltage Sag B-N Alarm 259 434937 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AN Voltage Sag A-N Alarm 259 434938 4318 3 4318 2 2 5 99.9 3.1
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 395886 4266 4 4266 2 3 5 98.7 3.1
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 452364 4266 4 4266 2 3 5 98.7 3.1
Current Unbalance B Alarm Current Unbalance B Alarm 138 438253 4217 5 4217 3 4 4 97.6 3.0
Current Unbalance B Alarm Current Unbalance B Alarm 138 438257 4217 5 4217 3 4 4 97.6 3.0
Current Unbalance B Alarm Current Unbalance B Alarm 138 438267 4217 5 4217 3 4 4 97.6 3.0
CHW Flow SP{0} Status|11 388 356894 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 424581 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 434334 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 437594 4151 6 4150 4 5 3 96.0 3.0
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 395887 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 438764 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 439858 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 442635 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 444567 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 448601 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 395883 3470 8 3468 2 7 5 80.2 2.5
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 439899 3470 8 3468 2 7 5 80.2 2.5
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 395885 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 438776 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 439863 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 442654 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 444566 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 395888 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 401228 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 438777 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 439947 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 444590 3029 10 3028 5 9 2 70.0 2.2
Over THD Current A Alarm Over THD Current A Alarm 95 55319 2839 11 2839 1 10 6 65.7 2.0
Over THD Current B Alarm Over THD Current B Alarm 95 128744 2825 12 2825 1 11 6 65.3 2.0
CHW Supply Temp SP{0} Status|12 388 390181 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 411341 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 433011 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 439199 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 441946 2785 13 2785 5 12 2 64.4 2.0
Voltage Phases AB Voltage Sag A-B Alarm 263 398250 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases BC Voltage Sag B-C Alarm 263 398251 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases CA Voltage Sag C-A Alarm 263 398252 1893 14 1893 2 13 5 43.8 1.3
Frequency Under Frequency Alarm 263 398268 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases CA Voltage Sag C-A Alarm 263 430403 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases AB Voltage Sag A-B Alarm 263 430404 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases BC Voltage Sag B-C Alarm 263 430405 1893 14 1893 2 13 5 43.8 1.3
Frequency Under Frequency Alarm 263 430408 1893 14 1893 2 13 5 43.8 1.3
Potential Power Loss 3 230212 1831 15 1831 1 14 6 42.3 1.3
Current Potential Power Loss 3 442797 1189 16 1189 1 15 6 27.5 0.8
Current Potential Power Loss 3 442796 1178 17 1178 1 16 6 27.2 0.8
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 28 294162 982 18 982 2 17 5 22.7 0.7
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 28 430395 982 18 982 2 17 5 22.7 0.7
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 28 294161 980 19 980 2 18 5 22.6 0.7
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 28 430394 980 19 980 2 18 5 22.6 0.7
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 228 404643 536 20 536 1 19 6 12.4 0.3
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 222 407539 502 21 502 1 20 6 11.6 0.3
Over THD Current A Alarm Over THD Current A Alarm 225 440001 453 22 453 1 21 6 10.4 0.3
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 192 402347 295 23 295 1 22 6 6.8 0.2
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 192 402348 295 23 295 1 22 6 6.8 0.2
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 192 402409 289 24 289 1 23 6 6.6 0.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 192 402413 288 25 288 1 24 6 6.6 0.2
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 192 402498 285 26 285 1 25 6 6.5 0.2
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 28 402474 283 27 283 1 26 6 6.5 0.2
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 192 402499 268 28 268 1 27 6 6.2 0.1
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 228 404641 248 29 248 1 28 6 5.7 0.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 228 404642 248 29 248 1 28 6 5.7 0.1
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 225 407517 213 30 213 1 29 6 4.9 0.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 225 407518 213 30 213 1 29 6 4.9 0.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 191 407237 211 31 211 1 30 6 4.8 0.1
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 191 407238 210 32 210 1 31 6 4.8 0.1

Recurring (SourceId & Cause/Effect text, any groups)

Cause_text Effect_text SourceId ID Nr_Stale Rank_alarms Alarm_text_stale_number_of_10_minute_timestamps Alarm_text_number_of_staleIDs Rank_presence Rank_IDs Alarm_text_percent_stale_of_10_minute_timestamps Alarm_text_percent_stale_of_all_alarms_timestamps
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 395884 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 451175 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 452246 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 34 205439 4320 2 4320 1 1 6 100.0 3.1
Voltage Phases AB Voltage Sag A-B Alarm 259 335907 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BC Voltage Sag B-C Alarm 259 335908 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CA Voltage Sag C-A Alarm 259 335909 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CN Voltage Sag C-N Alarm 259 335913 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BN Voltage Sag B-N Alarm 259 335914 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AN Voltage Sag A-N Alarm 259 335915 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AB Voltage Sag A-B Alarm 259 434933 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BC Voltage Sag B-C Alarm 259 434934 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CA Voltage Sag C-A Alarm 259 434935 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CN Voltage Sag C-N Alarm 259 434936 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BN Voltage Sag B-N Alarm 259 434937 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AN Voltage Sag A-N Alarm 259 434938 4318 3 4318 2 2 5 99.9 3.1
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 395886 4266 4 4266 2 3 5 98.7 3.1
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 452364 4266 4 4266 2 3 5 98.7 3.1
Current Unbalance B Alarm Current Unbalance B Alarm 138 438253 4217 5 4217 3 4 4 97.6 3.0
Current Unbalance B Alarm Current Unbalance B Alarm 138 438257 4217 5 4217 3 4 4 97.6 3.0
Current Unbalance B Alarm Current Unbalance B Alarm 138 438267 4217 5 4217 3 4 4 97.6 3.0
CHW Flow SP{0} Status|11 388 356894 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 424581 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 434334 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 437594 4151 6 4150 4 5 3 96.0 3.0
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 395887 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 438764 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 439858 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 442635 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 444567 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 448601 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 395883 3470 8 3468 2 7 5 80.2 2.5
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 439899 3470 8 3468 2 7 5 80.2 2.5
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 395885 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 438776 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 439863 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 442654 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 444566 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 395888 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 401228 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 438777 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 439947 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 444590 3029 10 3028 5 9 2 70.0 2.2

Complete list

Cause_text Effect_text SourceId ID Nr_Stale Rank_alarms Alarm_text_stale_number_of_10_minute_timestamps Alarm_text_number_of_staleIDs Rank_presence Rank_IDs Alarm_text_percent_stale_of_10_minute_timestamps Alarm_text_percent_stale_of_all_alarms_timestamps
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 395884 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 451175 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 237 452246 4322 1 4320 3 1 4 100.0 3.1
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 34 205439 4320 2 4320 1 1 6 100.0 3.1
Voltage Phases AB Voltage Sag A-B Alarm 259 335907 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BC Voltage Sag B-C Alarm 259 335908 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CA Voltage Sag C-A Alarm 259 335909 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CN Voltage Sag C-N Alarm 259 335913 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BN Voltage Sag B-N Alarm 259 335914 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AN Voltage Sag A-N Alarm 259 335915 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AB Voltage Sag A-B Alarm 259 434933 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BC Voltage Sag B-C Alarm 259 434934 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CA Voltage Sag C-A Alarm 259 434935 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases CN Voltage Sag C-N Alarm 259 434936 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases BN Voltage Sag B-N Alarm 259 434937 4318 3 4318 2 2 5 99.9 3.1
Voltage Phases AN Voltage Sag A-N Alarm 259 434938 4318 3 4318 2 2 5 99.9 3.1
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 395886 4266 4 4266 2 3 5 98.7 3.1
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 237 452364 4266 4 4266 2 3 5 98.7 3.1
Current Unbalance B Alarm Current Unbalance B Alarm 138 438253 4217 5 4217 3 4 4 97.6 3.0
Current Unbalance B Alarm Current Unbalance B Alarm 138 438257 4217 5 4217 3 4 4 97.6 3.0
Current Unbalance B Alarm Current Unbalance B Alarm 138 438267 4217 5 4217 3 4 4 97.6 3.0
CHW Flow SP{0} Status|11 388 356894 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 424581 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 434334 4151 6 4150 4 5 3 96.0 3.0
CHW Flow SP{0} Status|11 388 437594 4151 6 4150 4 5 3 96.0 3.0
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 395887 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 438764 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 439858 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 442635 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 444567 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 237 448601 3579 7 3578 6 6 1 82.8 2.6
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 395883 3470 8 3468 2 7 5 80.2 2.5
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 237 439899 3470 8 3468 2 7 5 80.2 2.5
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 395885 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 438776 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 439863 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 442654 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 237 444566 3329 9 3328 5 8 2 77.0 2.4
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 395888 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 401228 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 438777 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 439947 3029 10 3028 5 9 2 70.0 2.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 237 444590 3029 10 3028 5 9 2 70.0 2.2
Over THD Current A Alarm Over THD Current A Alarm 95 55319 2839 11 2839 1 10 6 65.7 2.0
Over THD Current B Alarm Over THD Current B Alarm 95 128744 2825 12 2825 1 11 6 65.3 2.0
CHW Supply Temp SP{0} Status|12 388 390181 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 411341 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 433011 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 439199 2785 13 2785 5 12 2 64.4 2.0
CHW Supply Temp SP{0} Status|12 388 441946 2785 13 2785 5 12 2 64.4 2.0
Voltage Phases AB Voltage Sag A-B Alarm 263 398250 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases BC Voltage Sag B-C Alarm 263 398251 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases CA Voltage Sag C-A Alarm 263 398252 1893 14 1893 2 13 5 43.8 1.3
Frequency Under Frequency Alarm 263 398268 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases CA Voltage Sag C-A Alarm 263 430403 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases AB Voltage Sag A-B Alarm 263 430404 1893 14 1893 2 13 5 43.8 1.3
Voltage Phases BC Voltage Sag B-C Alarm 263 430405 1893 14 1893 2 13 5 43.8 1.3
Frequency Under Frequency Alarm 263 430408 1893 14 1893 2 13 5 43.8 1.3
Potential Power Loss 3 230212 1831 15 1831 1 14 6 42.3 1.3
Current Potential Power Loss 3 442797 1189 16 1189 1 15 6 27.5 0.8
Current Potential Power Loss 3 442796 1178 17 1178 1 16 6 27.2 0.8
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 28 294162 982 18 982 2 17 5 22.7 0.7
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 28 430395 982 18 982 2 17 5 22.7 0.7
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 28 294161 980 19 980 2 18 5 22.6 0.7
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 28 430394 980 19 980 2 18 5 22.6 0.7
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 228 404643 536 20 536 1 19 6 12.4 0.3
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 222 407539 502 21 502 1 20 6 11.6 0.3
Over THD Current A Alarm Over THD Current A Alarm 225 440001 453 22 453 1 21 6 10.4 0.3
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 192 402347 295 23 295 1 22 6 6.8 0.2
Over THD Voltage A-B Alarm Over THD Voltage A-B Alarm 192 402348 295 23 295 1 22 6 6.8 0.2
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 192 402409 289 24 289 1 23 6 6.6 0.2
Over THD Voltage C-A Alarm Over THD Voltage C-A Alarm 192 402413 288 25 288 1 24 6 6.6 0.2
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 192 402498 285 26 285 1 25 6 6.5 0.2
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 28 402474 283 27 283 1 26 6 6.5 0.2
Over THD Voltage C-N Alarm Over THD Voltage C-N Alarm 192 402499 268 28 268 1 27 6 6.2 0.1
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 228 404641 248 29 248 1 28 6 5.7 0.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 228 404642 248 29 248 1 28 6 5.7 0.1
Over THD Voltage A-N Alarm Over THD Voltage A-N Alarm 225 407517 213 30 213 1 29 6 4.9 0.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 225 407518 213 30 213 1 29 6 4.9 0.1
Over THD Voltage B-N Alarm Over THD Voltage B-N Alarm 191 407237 211 31 211 1 30 6 4.8 0.1
Over THD Voltage B-C Alarm Over THD Voltage B-C Alarm 191 407238 210 32 210 1 31 6 4.8 0.1

–>

IMPACTFULL / HIGH PRIORITY ALARMS ANALYSIS (qualitative analysis vs. quantitative analysis)

Quantitative proportion of High priority & potential impacting alarms

List of these alarms

Recommendation

  • Focus on Meter 3 (only 3 alarms)

  • Focus on Meter 388 (only 10 alarms)

ASSUMPTIONS & ISSUES

Absent month : No alarms => NA in Nr of alarms disactivate the report generation or use 0 as values ????

Other text and sections pushed into appendix : Any re-use

ISA 18.2 Chattering text

There are several alarms related standards.

By looking at the ISA18.2 standard, we can use the definition of “nuisance alarm” (3.1.63) as “alarms that annunciates excessively, unnecessarily, or does not return to normal after the operator action is taken. EXAMPLE: chattering alarm, fleeting alarm, or stale alarm”.

And when we further look at the definition of “Chattering and fleeting alarms” (16.4.6), we can see how this will improve the alarm management :

"- A chattering alarm repeatedly transitions between the active state and the not active state in a short period of time.

  • Fleeting alarms are similar short-duration alarms that do not immediately repeat.

  • In both cases, the transition is not due to the result of operator action."

what is the problem : These alarms may massively and more or less regularly hit your system, creating a very high noise level, which makes it hard for a user to know where to focus and what is really important to do first.

"- It is possible for a chattering alarm to generate hundreds or thousands of records in a few hours.

  • This results in a significant distraction for the operators.

  • Chattering alarms are often high in the listing of the most frequent alarms. Chattering and fleeting alarm behaviors should be eliminated.

  • There is no long-term acceptable quantity of chattering or fleeting alarms."